C144 Power of Speech and Spirit?

When Ji Xiaoxi and Chen Xiaoming were showing their might, Lee Xingyun was not idle either. With the buff of the Dual Dragon Flash, the Dragoncry Sword once again let out a clear roar, and with Lee Xingyun's swing, two coiling wyverns broke through the sword and rushed towards the Black Tiger. The ear-piercing sonic boom clearly showed that the sword had already surpassed the speed of sound